British Geological Survey (BGS) Geophysical Survey 1981/6: Bristol Channel & SW Approaches (21/09/1981 to 29/09/1981)

Report: Brett, CP. 1981. Operations report on Project 81/06. A Regional Geophysical Survey in the Bristol Channel and South West Approaches. (IGS Report No 122) The objectives of this survey were to fill in gaps in the previously surveyed areas in the Bristol Channel and Nymphe Bank sheets of the IGS 1:250000 map series.